<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
    <style>

    </style>
</head>

<body>
    <div id="app">
        <ul>
            <!-- key高效更新虚拟dom -->
            <li v-for="(item,index) in arr" :key="index"><input type="checkbox" name="" id=""> {{item}}</li>
        </ul>
    </div>
</body>
<script>
    var vm = new Vue({
        el: '#app',
        data: {
            arr: ['vue', 'react', 'Angular', 'JQ']
        }
    })
</script>

</html>